This has already been talked about previously in this same thread. The active part wasn't mentioned, but how he stock air box gets its air has already been thoroughly discussed...and every stock airbox intake system is the same. It is still an abhorrently small channel for the air to some through and is akin to breathing through a straw. Whether or not newmission's mod actually induces pressure is debatable, but the fact of the matter is the temperature of the air in the airbox drops to almost to dead ambient with his mod as opposed to much higher without.